CASPER: Concordia atmospheric spectroscopy of emitted radiation

M. De Petris, A. Catalano, S. De Gregori, L. Lamagna, V. Lattanzi, G. Luzzi, R. Maoli, A. Melchiorri, F. Melchiorri, G. Savini, G. G. Vetrani, E. S. Battistelli, L. Valenziano, N. Mandolesi, F. Villa, F. Cuttaia, P. A.R. Ade, P. Mauskopf, A. Orlando, P. EncrenazJ. R. Pardo, J. Cernicharo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

CASPER (Concordia Atmospheric Spectroscopy of Emitted Radiation) is a spectrometer proposed for installation at Dome C, devoted to measurements of atmospheric emission in the spectral region between 180 μm and 3 mm (3-55 cm-1). This instrument will be able to perform continuous spectral sampling at different altitudes at angular scales of ∼1°. From the recorded data it is possible to extract atmospheric transmittance within 1% in the whole wide operating band, together with water vapour content and O 2 and O3 concentrations. CASPER will allow us to characterize the site for future FIR/mm telescopes. Atmospheric data recorded by CASPER will allow for correction of astrophysical and cosmological observations without the need for telescope-specific procedures and further loss of observation time with more precision in the observations themselves. Calibration of ground-based telescopes on known sky sources is strongly affected by atmospheric absorption. CASPER has this as its primary goal. The spectrometer is based on a Martin-Puplett interferometer. Two data sampling solutions will be performed: phase modulation & fast scan strategy. Sky radiation is collected towards the interferometer by an optical setup that allows the field of view, to explore the full 0 ÷ 90° range of elevation angles. With a low spurious polarization instrument, monitoring of polarized atmospheric contribution will be possible.

Original languageEnglish (US)
Title of host publicationProceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007
Pages233-238
Number of pages6
DOIs
StatePublished - 2005
EventDome C Astronomy and Astrophysics Meeting - Toulouse, France
Duration: Jun 28 2004Jun 30 2004

Publication series

NameEAS Publications Series
Volume14
ISSN (Print)1633-4760
ISSN (Electronic)1638-1963

Other

OtherDome C Astronomy and Astrophysics Meeting
CountryFrance
CityToulouse
Period6/28/046/30/04

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Engineering(all)
  • Space and Planetary Science

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    De Petris, M., Catalano, A., De Gregori, S., Lamagna, L., Lattanzi, V., Luzzi, G., Maoli, R., Melchiorri, A., Melchiorri, F., Savini, G., Vetrani, G. G., Battistelli, E. S., Valenziano, L., Mandolesi, N., Villa, F., Cuttaia, F., Ade, P. A. R., Mauskopf, P., Orlando, A., ... Cernicharo, J. (2005). CASPER: Concordia atmospheric spectroscopy of emitted radiation. In Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007 (pp. 233-238). (EAS Publications Series; Vol. 14). https://doi.org/10.1051/eas:2005036